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Top Forums Shell Programming and Scripting Grouping and summing data through unix Post 302151289 by radoulov on Friday 14th of December 2007 09:20:52 AM
Old 12-14-2007
Code:
awk '{
	x[$1] += $2
	if (x[$1] > max) {
		max = x[$1]
		dt = $1
		} 
} END {
	print dt
}' data

For more than one entry with amt == max:

Code:
awk '{
	x[$1] += $2
	if (x[$1] > max) {
		max = x[$1]
		} 
} END {
	for (mdt in x)
		if (x[mdt] == max)
			print mdt
}' data


Last edited by radoulov; 12-14-2007 at 10:47 AM..
 

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